JPH0975356A - Treatment tool for endoscope - Google Patents
Treatment tool for endoscopeInfo
- Publication number
- JPH0975356A JPH0975356A JP7230950A JP23095095A JPH0975356A JP H0975356 A JPH0975356 A JP H0975356A JP 7230950 A JP7230950 A JP 7230950A JP 23095095 A JP23095095 A JP 23095095A JP H0975356 A JPH0975356 A JP H0975356A
- Authority
- JP
- Japan
- Prior art keywords
- needle member
- cup
- arms
- treatment
- needle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Surgical Instruments (AREA)
- Endoscopes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、内視鏡の処置用チ
ャンネルを通じて体腔内に導入されて使用される内視鏡
用処置具に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a treatment instrument for an endoscope which is used by being introduced into a body cavity through a treatment channel of the endoscope.
【０００２】[0002]
【従来の技術】従来の内視鏡用処置具としては、その一
例として、当社提案の特願平５−１８１５０４号に記載
された鉗子が知られている。ところで、この鉗子は、図
１のように構成されている。すなわち、これは可撓管２
の基端に設けられる操作部本体４を有しており、操作部
本体４の外周にはスライダ３０が摺動自在に取り付けら
れている。可撓管２の先端には開閉自在な２つのカップ
部材６からなる処置作用部５が設けられており、この処
置作用部５は前記可撓管２の内部に挿入された操作ワイ
ヤ３１の先端に連結されている。操作ワイヤ３１の手元
側端は、連結構造３２により前記スライダ３０に連結さ
れており、そのスライダ３０を移動することにより、操
作ワイヤ３１を進退して可撓管２の先端にある処置作用
部５を開閉操作するようになっている。2. Description of the Related Art As a conventional endoscope treatment tool, for example, a forceps described in Japanese Patent Application No. 5-181504 proposed by the present invention is known. By the way, this forceps is configured as shown in FIG. That is, this is the flexible tube 2
The operation section main body 4 is provided at the proximal end of the slider, and the slider 30 is slidably attached to the outer periphery of the operation section main body 4. At the tip of the flexible tube 2 is provided a treatment acting portion 5 composed of two cup members 6 which can be opened and closed. The treatment acting portion 5 is the tip of an operation wire 31 inserted into the inside of the flexible tube 2. Are linked to. The proximal end of the operation wire 31 is connected to the slider 30 by a connection structure 32. By moving the slider 30, the operation wire 31 is moved back and forth to move the operation wire 31 at the distal end of the flexible tube 2. It is designed to open and close.
【０００３】前記処置作用部５は、図６および図７に示
すように構成されている。可撓管２の先端に取着される
筒状の支持部材７は、その先端部分にスリット８を形成
し、左右の支持アーム９を形成する。このスリット８で
は前記各カップ部材６のそれぞれのアーム部１０を交差
させ、この交差部には、カップ軸１１を貫通する。カッ
プ軸１１の両端は、対応する支持アーム９に形成した軸
孔１２に差し込んでかしめ、あるいは溶着することによ
り固定している。各カップ部材６のアーム部１０後端に
はそれぞれリンク部材２７の一端が枢着され、リンク部
材２７の他端は連結部材３３の先端に枢着される。連結
部材３３の後端には操作ワイヤ３１の先端が取り付けら
れている。この操作ワイヤ３１は前記可撓管２内に進退
自在に挿通され操作部４に導かれる。また、カップ部材
６のアーム部材１０の間には、図８で示すような指標ま
たは穿刺用の針部材３４の基部３５が挟み込まれてい
る。針部材３４の基部３５にはカップ軸１１を貫通する
軸孔３９が形成されている。針部材３４における基部３
５と先端針部３６との中間部には、支持部材７の先端壁
部に形成した凹部３８と係合する突起３７が針部材３４
内に切り起こして形成してある。The treatment action section 5 is constructed as shown in FIGS. 6 and 7. The tubular support member 7 attached to the tip of the flexible tube 2 has a slit 8 formed at the tip portion thereof, and forms left and right support arms 9. In this slit 8, the respective arm portions 10 of the respective cup members 6 are crossed, and the cup shaft 11 is penetrated through this crossing portion. Both ends of the cup shaft 11 are fixed by inserting them into shaft holes 12 formed in the corresponding support arms 9 and caulking or welding them. One end of the link member 27 is pivotally attached to the rear end of the arm portion 10 of each cup member 6, and the other end of the link member 27 is pivotally attached to the tip end of the connecting member 33. The tip of the operation wire 31 is attached to the rear end of the connecting member 33. The operation wire 31 is inserted into the flexible tube 2 so as to be movable back and forth, and is guided to the operation unit 4. Further, a base portion 35 of an index or puncture needle member 34 as shown in FIG. 8 is sandwiched between the arm members 10 of the cup member 6. A shaft hole 39 penetrating the cup shaft 11 is formed in the base portion 35 of the needle member 34. Base 3 of the needle member 34
5, a protrusion 37 engaging with a recess 38 formed in the distal end wall portion of the support member 7 is provided at an intermediate portion between the needle member 34 and the needle member 34.
It is cut and raised inside.
【０００４】[0004]
【発明が解決しようとする課題】前記従来の穿刺用の針
部材３４の構造では、支持部材７の先端壁部に形成した
凹部３８と係合する突起３７が針部材３４の内部に切り
起こして形成してあるため、針部材３４の面積を減少さ
せることになり、穿刺した時の針部材３４の強度が落ち
ることになる。具体的には、細胞（検体）に穿刺した時
に、針部材３４に座屈等の不具合が生じ易くなる。ま
た、針部材３４の基部３５に形成されているカップ軸１
１を貫通する軸孔３９は、突起３７を切り起こすため
に、一部を切り欠くことになる。これは、針部材３４の
穿刺に伴い、針部材３４に大きな力が加わるが、この
際、針部材３４に設けた軸孔３９がその力に耐え切れ
ず、針部材３４の捩れ、変形等の不具合が生じる恐れが
あった。In the structure of the above-mentioned conventional needle member 34 for puncture, the protrusion 37 engaging with the recess 38 formed in the distal end wall portion of the support member 7 is cut and raised inside the needle member 34. Since it is formed, the area of the needle member 34 is reduced, and the strength of the needle member 34 at the time of puncturing is reduced. Specifically, when a cell (specimen) is punctured, a problem such as buckling of the needle member 34 is likely to occur. In addition, the cup shaft 1 formed on the base portion 35 of the needle member 34
The shaft hole 39 penetrating 1 is cut out in order to cut and raise the projection 37. This is because a large force is applied to the needle member 34 with the puncture of the needle member 34, but at this time, the shaft hole 39 provided in the needle member 34 cannot withstand the force, and the needle member 34 is twisted or deformed. There was a risk of malfunction.
【０００５】また、穿刺用の針部材３４に設けた突起３
７が１ヵ所のみであるため、カップ部材６を開閉する
際、針部材３４がカップ部材６のアーム部１０やカップ
軸１１と一緒に回動することを防止する目的に対して
は、十分とは言えなかった。すなわち、針部材３４の回
動を防止する力が突起３７の１ヵ所に集中し、突起３７
が変形する場合があった。Further, the protrusion 3 provided on the needle member 34 for puncture
Since there is only one location 7, it is sufficient for the purpose of preventing the needle member 34 from rotating together with the arm portion 10 of the cup member 6 and the cup shaft 11 when opening and closing the cup member 6. I couldn't say. That is, the force for preventing the rotation of the needle member 34 is concentrated at one location of the protrusion 37,
Was sometimes deformed.
【０００６】本発明は、前記課題に着目してなされたも
ので、穿刺時するのに十分な強度の針部材を有した内視
鏡用処置具を提供することを目的とする。The present invention has been made in view of the above problems, and an object of the present invention is to provide an endoscopic treatment instrument having a needle member having sufficient strength for puncturing.
【０００７】[0007]
【課題を解決するための手段】前記課題を解決するため
に、本発明は以下のように構成した。請求項１の発明
は、内視鏡の処置具挿通用チャンネルを通じて体腔内に
導入される可撓管部と、この可撓管部の先端部分に設け
られ支持部材に取り付けたカップ軸により回動自在に保
持される処置作用部と、この処置作用部に組み込まれた
穿刺用の針部材と、前記可撓管部内へ進退自在に挿通さ
れ進退することにより前記処置作用部を作動させる作動
ワイヤと、前記可撓管部の基端部に設けられ前記作動ワ
イヤを進退操作する操作部とを有する内視鏡用処置具に
おいて、前記穿刺用の針部材は、軸孔を設けるととも
に、針部材に対して垂直でかつ各々１８０°反対方向に
曲げた２本のアームを針部材の側面に設け、前記軸孔を
前記カップ軸に貫通させるとともに、前記２本のアーム
を前記支持部材に形成した２ヵ所の凹部に係合させて前
記処置作用部に組み込むこととした。In order to solve the above-mentioned problems, the present invention has the following constitution. According to the invention of claim 1, the flexible tube portion is introduced into the body cavity through the treatment tool insertion channel of the endoscope, and the flexible tube portion is rotated by the cup shaft provided at the tip end portion of the flexible tube portion and attached to the support member. A treatment action portion that is held freely, a puncture needle member that is incorporated in the treatment action portion, and an actuation wire that actuates the treatment action portion by being inserted into and retracted from the flexible tube portion to advance and retract. In the treatment instrument for an endoscope having an operation portion which is provided at a proximal end portion of the flexible tube portion and which advances and retracts the operation wire, the puncture needle member is provided with an axial hole and Two arms that are perpendicular to each other and bent in opposite directions by 180 ° are provided on the side surface of the needle member to allow the shaft hole to pass through the cup shaft and to form the two arms on the support member. By engaging with the recesses at the It was decided to incorporate into the action part.
【０００８】請求項２の発明は、請求項１の構成にあっ
て、２本のアームは軸孔よりも針部材の先端側に設ける
こととした。According to a second aspect of the present invention, in the structure of the first aspect, the two arms are provided closer to the tip side of the needle member than the shaft hole.
【０００９】請求項３の発明は、請求項１の構成にあっ
て、２本のアームは軸孔よりも針部材の基端側に設ける
こととした。According to a third aspect of the present invention, in the structure of the first aspect, the two arms are provided closer to the base end side of the needle member than the shaft hole.
【００１０】請求項１〜３の構成によれば、穿刺用の針
部材は、穿刺時に十分な強度を持つ。According to the present invention, the puncture needle member has sufficient strength during puncture.
【００１１】[0011]
［発明の実施の形態１］図１〜図３は本発明の実施の形
態１としての生検鉗子を示すものである。図１は生検鉗
子の全体的な構成を示している。図２は生検鉗子の処置
作用部を示し、図３は処置作用部に設けた針部材を示し
ている。[First Embodiment of the Invention] FIGS. 1 to 3 show a biopsy forceps as a first embodiment of the present invention. FIG. 1 shows the overall structure of the biopsy forceps. FIG. 2 shows a treatment acting portion of the biopsy forceps, and FIG. 3 shows a needle member provided in the treatment acting portion.
【００１２】図１の生検鉗子１は図示しない内視鏡の処
置具挿通用チャンネルに挿通される、コイル等から形成
される細長な可撓管２からなる挿入部３と、この挿入部
３の手元側端に連結される操作部４とを有する。可撓管
２の先端には処置作用部５として２つのカップ部材６が
開閉自在な状態で取り付けられている。なお、操作部４
の構成は、従来技術と同様に構成されているので、その
説明を省略する。The biopsy forceps 1 shown in FIG. 1 is an insertion portion 3 formed of an elongated flexible tube 2 formed of a coil or the like, which is inserted into a treatment instrument insertion channel of an endoscope (not shown), and this insertion portion 3 And an operating portion 4 connected to the proximal end of the. Two cup members 6 are attached to the distal end of the flexible tube 2 as a treatment acting portion 5 in a freely openable and closable state. The operation unit 4
Since the configuration of is similar to that of the conventional technique, its description is omitted.
【００１３】前記処置作用部５は、図２に示すように構
成されている。可撓管２の先端に取着される筒状の支持
部材７はその先端部分にスリット８を形成し、カップ部
材６を回動自在に支持するための支持アーム９を図２に
おいて上下に形成している。このスリット８では前記各
カップ部材６のそれぞれのアーム部１０を交差させ、こ
の交差部１０にはカップ軸１１を貫通し、カップ部材６
を開閉自在に支持している。カップ軸１１の両端は対応
する支持アーム９に形成した軸孔１２に差し込んでかし
め、あるいは溶着することにより支持アーム９に固定し
ている。The treatment action section 5 is constructed as shown in FIG. The tubular support member 7 attached to the tip of the flexible tube 2 has a slit 8 formed at the tip thereof, and a support arm 9 for rotatably supporting the cup member 6 is formed vertically in FIG. are doing. In this slit 8, each arm portion 10 of each cup member 6 is crossed, and the cup shaft 11 is penetrated through this crossing portion 10
Is supported so that it can be opened and closed. Both ends of the cup shaft 11 are fixed to the support arm 9 by inserting them into shaft holes 12 formed in the corresponding support arm 9 and caulking or welding them.
【００１４】また、２つのカップ部材６のアーム部１０
の間には、図３で示すような穿刺用の針部材１３の基部
１４が挟み込まれている。針部材１３の基部１４にはカ
ップ軸１１を貫通する軸孔１５が形成されている。針部
材１３における基部１４と先端針部１６との中間部の両
側には一対のアーム１７が針部材１３に対して垂直方向
に形成されており、この一対のアーム１７は各々逆（上
下）方向に突出するように設けられている。この針部材
１３は、軸孔１５にカップ軸１１を挿入するとともに、
針部材１３の上下のアーム１７と各々係合する位置にお
いて支持部材７の支持アーム９に設けられた凹部１８と
上下のアーム１７を係合するようにして取り付けられて
いる。この実施の形態での針部材１３の一対のアーム１
７は針部材１３の母材と一体に作られている。The arm portion 10 of the two cup members 6
The base portion 14 of the needle member 13 for puncture as shown in FIG. 3 is sandwiched between them. A shaft hole 15 penetrating the cup shaft 11 is formed in the base portion 14 of the needle member 13. A pair of arms 17 are formed on both sides of an intermediate portion between the base portion 14 and the tip needle portion 16 of the needle member 13 in a direction perpendicular to the needle member 13, and the pair of arms 17 are in opposite (upward and downward) directions. It is provided so as to project into. The needle member 13 has the cup shaft 11 inserted into the shaft hole 15 and
The upper and lower arms 17 are attached so as to engage with the recesses 18 provided in the support arm 9 of the support member 7 at positions where they are respectively engaged with the upper and lower arms 17 of the needle member 13. The pair of arms 1 of the needle member 13 in this embodiment
7 is made integrally with the base material of the needle member 13.
【００１５】本実施の形態によれば、図２で示すように
針部材１３の一対のアーム１７が支持部材７の支持アー
ム９の２ヵ所に形成した凹部１８に係止しているので、
カップ部材６を開閉する際、従来の１ヵ所の凹部３８に
係止させる構成に比べ、針部材１３がカップ部材６のア
ーム部１０やカップ軸１１と一緒に回動することが確実
に防止されるため、針部材１３による指標が狂わず、内
視鏡処置具としての信頼性が向上する。さらに、針部材
１３の一対のアーム１７は針部材１３たる母材と一体に
形成されており、母材とアーム１７を別部品にして、母
材にアーム１７を取り付ける場合より安価である。ま
た、一対のアーム１７の形成は、従来のように針部材３
４たる母材内の一部を使うのではなく、針部材１３たる
母材の外側に成形するために、針部材１３自体の強度が
大きくなり、穿刺した時に針部材１３に座屈等が生ずる
不具合は無くなる。そして、カップ軸１１を貫通する軸
孔１５の周囲の材料面積も増え、軸孔１５を形成する基
部１４の強度が上がる結果、針部材１３の穿刺時に、こ
の軸孔１５に大きな作動荷重が加わっても従来のように
軸孔１５や針部材１３の捩れ、変形等の不具合は生じな
くなる。このように内視鏡処置具としての品質、機能は
大幅に向上することになる。According to the present embodiment, as shown in FIG. 2, the pair of arms 17 of the needle member 13 are locked in the recesses 18 formed at two positions of the support arm 9 of the support member 7.
When the cup member 6 is opened and closed, the needle member 13 is surely prevented from rotating together with the arm portion 10 and the cup shaft 11 of the cup member 6 as compared with the conventional configuration in which the cup member 6 is locked in one recess 38. Therefore, the index of the needle member 13 does not change, and the reliability of the endoscopic treatment tool is improved. Further, the pair of arms 17 of the needle member 13 is formed integrally with the base material that is the needle member 13, and it is cheaper than the case where the base material and the arm 17 are separate parts and the arm 17 is attached to the base material. Further, the pair of arms 17 is formed by the needle member 3 as in the conventional case.
4. Since the needle member 13 is molded outside the base material that is the needle member 13 rather than using a part of the base material, the needle member 13 itself has a large strength, and the needle member 13 buckles when punctured. The defect disappears. Then, the material area around the shaft hole 15 penetrating the cup shaft 11 is increased, and the strength of the base portion 14 forming the shaft hole 15 is increased. As a result, when the needle member 13 is punctured, a large operating load is applied to the shaft hole 15. Even if the shaft hole 15 and the needle member 13 are twisted and deformed as in the conventional case, however, problems such as deformation do not occur. In this way, the quality and function of the endoscopic treatment tool are significantly improved.
【００１６】［発明の実施の形態２］図４および図５は
本発明の実施の形態２としての生検鉗子を示すものであ
る。図４は生検鉗子の処置作用部を示す斜視図、図５は
処置作用部に設けた針部材を示す斜視図である。[Second Embodiment of the Invention] FIGS. 4 and 5 show a biopsy forceps as a second embodiment of the present invention. FIG. 4 is a perspective view showing a treatment acting portion of the biopsy forceps, and FIG. 5 is a perspective view showing a needle member provided in the treatment acting portion.
【００１７】本実施の形態の処置作用部２０には、実施
の形態１と同様に、図４で示すように２つのカップ部材
６のアーム部１０の間に穿刺用の針部材２１の基部２２
が挟み込まれている。この針部材２１の基部２２には、
図５に示すようにカップ軸１１を貫通する軸孔２３が形
成されている。穿刺用の針部材２１には、先端針部２４
から見て軸孔２３より遠い位置（基端側）に、針部材２
１の一対のアーム２５が基部２２の両側に針部材２１に
対して垂直方向に形成されている。この一対のアーム２
５は各々逆（上下）方向へ突出するように設けられてお
り、支持部材７の支持アーム９の側面において、針部材
２１の上下のアーム２４と各々係合する位置に設けられ
た凹部２６と係合するようになっている。本実施の形態
でも針部材２１の一対のアーム２５は針部材２１の母材
と一体に作られている。As in the first embodiment, the treatment acting portion 20 of the present embodiment has a base portion 22 of a puncture needle member 21 between the arm portions 10 of the two cup members 6 as shown in FIG.
Is sandwiched. At the base 22 of the needle member 21,
As shown in FIG. 5, a shaft hole 23 penetrating the cup shaft 11 is formed. The needle member 21 for puncture includes a tip needle portion 24.
The needle member 2 at a position (base end side) farther from the shaft hole 23 as viewed from
One pair of arms 25 is formed on both sides of the base portion 22 in a direction perpendicular to the needle member 21. This pair of arms 2
5 are provided so as to project in the opposite (upward and downward) directions, respectively. It is designed to engage. Also in the present embodiment, the pair of arms 25 of the needle member 21 are integrally formed with the base material of the needle member 21.
【００１８】各カップ部材６のアーム部１０の後端には
それぞれリンク部材２７が枢着されている。前記実施の
形態１では、それぞれのリンク部材２７とカップ部材１
３のアーム部１０との枢着はスリット９の中心を越えた
側で行われている。しかし、本実施の形態２では、スリ
ット９の中心を越えないような位置で枢着されている。A link member 27 is pivotally attached to the rear end of the arm portion 10 of each cup member 6. In the first embodiment, each link member 27 and cup member 1
3 is pivotally attached to the arm portion 10 on the side beyond the center of the slit 9. However, in the second embodiment, the slit 9 is pivotally mounted at a position that does not exceed the center of the slit 9.
【００１９】本実施の形態の作用は、前記実施の形態１
と同様である。The operation of this embodiment is the same as that of the first embodiment.
Is the same as
【００２０】本実施の形態によれば、一対のアーム２５
を係合する凹部２６を支持部材９の先端に設ける必要が
無いため、支持部材９の全長を短くすることができ、内
視鏡の処置具挿通用チャンネルへの挿入性を向上させる
ことができる。According to this embodiment, the pair of arms 25
Since it is not necessary to provide the concave portion 26 that engages with the distal end of the support member 9, the total length of the support member 9 can be shortened and the insertability of the endoscope into the treatment instrument insertion channel can be improved. .
【００２１】[0021]
【発明の効果】本発明の請求項１〜３によれば、針部材
の２本のアームで針部材を支持部材に係合するため、カ
ップ部材を開閉する際、針部材がカップ部材のアーム部
やカップ軸と一緒に回動することが確実に防止される。
結果として針部材による指標が狂わず、処置具としての
信頼性が上がる。また、針部材の一対のアームは針部材
たる母材と一体であり、母材とアーム部を別部品にして
取り付ける場合よりも安価である。According to the first to third aspects of the present invention, since the needle member is engaged with the support member by the two arms of the needle member, when the cup member is opened and closed, the needle member is the arm of the cup member. Rotation together with the part and the cup shaft is reliably prevented.
As a result, the index of the needle member does not change, and the reliability of the treatment tool increases. Further, the pair of arms of the needle member is integrated with the base material that is the needle member, and is cheaper than the case where the base material and the arm portion are attached as separate parts.
【００２２】また、２本のアームの形成は、針部材たる
母材内の一部を使うのでは無く、母材の外側に形成する
ために針部材の母材の強度が大きくなり、穿刺した時に
針部材の座屈等の不具合は無くなる。さらに、カップ軸
を貫通する軸孔の周囲の材料面積も増え、軸孔の強度が
上がる結果、針の穿刺時にこの軸孔に大きな作動荷重が
加わっても、針部材の捩れ、変形等の不具合が生じなく
なる等、内視鏡用処置具としての性能に大きな効果があ
る。そして、特に請求項３の構成によれば、支持部材の
全長を短くすることが可能となり、内視鏡の処置具挿通
用チャンネルへの挿入性を向上させることができる。Further, since the two arms are formed not on a part of the base material which is the needle member but on the outside of the base material, the strength of the base material of the needle member is increased and puncturing is performed. Occasionally, problems such as buckling of the needle member disappear. In addition, the material area around the shaft hole that penetrates the cup shaft increases and the strength of the shaft hole increases, so that the needle member may be twisted or deformed even if a large operating load is applied to the shaft hole when the needle is punctured. It has a great effect on the performance as a treatment tool for an endoscope. And especially according to the structure of Claim 3, it becomes possible to shorten the total length of a support member and to improve the insertability in the treatment tool insertion channel of an endoscope.
【図１】生体鉗子の全体的な構成を示す説明図である。FIG. 1 is an explanatory diagram showing an overall configuration of a biopsy forceps.
【図２】本発明の実施の形態１の生体鉗子の処置作用部
を示す斜視図である。FIG. 2 is a perspective view showing a treatment action portion of the biopsy forceps according to the first embodiment of the present invention.
【図３】本発明の実施の形態１の処置作用部に設ける穿
刺用の針部材を示す斜視図である。FIG. 3 is a perspective view showing a puncture needle member provided in the treatment action portion according to the first embodiment of the present invention.
【図４】本発明の実施の形態２の生体鉗子の処置作用部
を示す斜視図である。FIG. 4 is a perspective view showing a treatment action portion of the living body forceps according to the second embodiment of the present invention.
【図５】本発明の実施の形態２の処置作用部に設ける穿
刺用の針部材を示す斜視図である。FIG. 5 is a perspective view showing a puncture needle member provided in the treatment action portion according to the second embodiment of the present invention.
【図６】従来技術の生体鉗子の処置作用部を示す斜視図
である。FIG. 6 is a perspective view showing a treatment action portion of a conventional biopsy forceps.
【図７】従来技術の生体鉗子の先端部を示す断面図であ
る。FIG. 7 is a cross-sectional view showing a tip portion of a conventional biopsy forceps.
【図８】従来技術の生体鉗子の処置作用部に設ける穿刺
用の針部材を示す斜視図である。FIG. 8 is a perspective view showing a needle member for puncture provided in a treatment action portion of a conventional biopsy forceps.
１ 生体鉗子 ５ 処置作用部 ６ カップ部材 ７ 支持部材 ９ 支持アーム １１ カップ軸 １２ 軸孔 １３，２１ 針部材 １４，２２ 基部 １５，２３ 軸孔 １６，２４ 先端針部 １７，２５ アーム １８，２６ 凹部 DESCRIPTION OF SYMBOLS 1 Living forceps 5 Treatment action part 6 Cup member 7 Support member 9 Support arm 11 Cup shaft 12 Shaft hole 13,21 Needle member 14,22 Base part 15,23 Shaft hole 16,24 Tip needle part 17,25 Arm 18,26 Recessed part
Claims (3)
て体腔内に導入される可撓管部と、この可撓管部の先端
部分に設けられ支持部材に取り付けたカップ軸により回
動自在に保持される処置作用部と、この処置作用部に組
み込まれた穿刺用の針部材と、前記可撓管部内へ進退自
在に挿通され進退することにより前記処置作用部を作動
させる作動ワイヤと、前記可撓管部の基端部に設けられ
前記作動ワイヤを進退操作する操作部とを有する内視鏡
用処置具において、前記穿刺用の針部材は、軸孔を設け
るとともに、針部材に対して垂直でかつ各々１８０°反
対方向に曲げた２本のアームを針部材の側面に設け、前
記軸孔を前記カップ軸に貫通させるとともに、前記２本
のアームを前記支持部材に形成した２ヵ所の凹部に係合
させて前記処置作用部に組み込むことを特徴とする内視
鏡用処置具。1. A flexible tube portion introduced into a body cavity through a treatment instrument insertion channel of an endoscope, and a cup shaft attached to a support member provided at a distal end portion of the flexible tube portion so as to be rotatable. A treatment action portion to be held, a puncture needle member incorporated in the treatment action portion, an actuation wire for actuating the treatment action part by advancing and retracting through the flexible tube portion, and In a treatment instrument for an endoscope having an operation portion which is provided at a proximal end portion of a flexible tube portion and which advances and retracts the operation wire, the puncture needle member is provided with an axial hole, and with respect to the needle member. Two arms, which are vertical and bent in opposite directions to each other by 180 °, are provided on the side surface of the needle member, the axial hole is made to penetrate the cup shaft, and the two arms are formed on the supporting member. The treatment action by engaging with the recess Endoscopic treatment tool, characterized in that incorporated into.
側に設けたことを特徴とする請求項１記載の内視鏡用処
置具。2. The treatment instrument for an endoscope according to claim 1, wherein the two arms are provided closer to the tip side of the needle member than the shaft hole.
側に設けたことを特徴とする請求項１記載の内視鏡用処
置具。3. The treatment instrument for an endoscope according to claim 1, wherein the two arms are provided on the proximal end side of the needle member with respect to the shaft hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7230950A JPH0975356A (en) | 1995-09-08 | 1995-09-08 | Treatment tool for endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7230950A JPH0975356A (en) | 1995-09-08 | 1995-09-08 | Treatment tool for endoscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0975356A true JPH0975356A (en) | 1997-03-25 |
Family
ID=16915864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7230950A Pending JPH0975356A (en) | 1995-09-08 | 1995-09-08 | Treatment tool for endoscope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0975356A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002369821A (en) * | 2001-06-14 | 2002-12-24 | Pentax Corp | Clip device for endoscope |
| US9681857B2 (en) | 2003-06-18 | 2017-06-20 | Boston Scientific Scimed, Inc. | Endoscopic instruments and methods of manufacture |
-
1995
- 1995-09-08 JP JP7230950A patent/JPH0975356A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002369821A (en) * | 2001-06-14 | 2002-12-24 | Pentax Corp | Clip device for endoscope |
| US9681857B2 (en) | 2003-06-18 | 2017-06-20 | Boston Scientific Scimed, Inc. | Endoscopic instruments and methods of manufacture |
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